Re: [Vserver] disk scheduling ?

From: Admin <vserver-info_at_internode.com.au>
Date: Wed 06 Jun 2007 - 02:06:25 BST
Message-Id: <200706061036.25884.vserver-info@internode.com.au>

On Wed, 6 Jun 2007 03:07:37 am Nicolas Cadou wrote:
> Le Tuesday 5 June 2007 06:52, Tony Lewis a écrit :
> > Nicolas Cadou wrote:
> > > Le Sunday 3 June 2007 02:15, Tony Lewis a écrit :
> > >> My context is this: one vserver runs a popular web site, and on
> > >> another one, occasionally I shift multi-gig files around, with cp.
> > >> When I'm doing that, the website vserver grinds to a halt - well,
> > >> responds to requests quite slowly anyway.
> > >
> > > Instead of cp I use rsync --bwlimit=7000, which throttles I/O to a bit
> > > less than 7MB/s. Works for local disk-to-disk copying, and works quite
> > > well.
> >
> > There's always a workaround, but that's the same as renice'ing processes
> > on one vserver to be cognisant of the needs of another vserver. It's
> > what the CPU limiting handles, so vservers can be more autonomous.
>
> I never came to try it, but this might help:
>
> http://linux-vserver.org/Frequently_Asked_Questions#Disk_I.2FO_limiting.3F_
>Is_that_possible.3F

A while back I made some patches for util-vserver and a vserver-patched kernel
which implemented ionice support

http://www.users.on.net/~anonc/.patches/vserver/

the readme.txt file has details on requirements and usage

it should be simple to adapt these to the latest releases.
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Received on Wed Jun 6 02:54:26 2007

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